Kreeft vs. Spencer on Islam

I'm listening to this now via LifeSiteNews.com:

Kreeft and Spencer debate: "Is the Only Good Muslim a Bad Muslim?"
Mr. Spencer came to argue that Islam as codified in the Q'uran and explicated by all authoritative sources aspires to subjugate and oppress "unbelievers" and impose sharia law throughout the world; because sharia law is inimical to religious freedom and to human dignity, we as Catholics should hope that Muslims are not devout enough to advocate it, (as their own faith says they must) by either warlike or peaceful means.

Dr. Kreeft came to offer his own perspective on the religion of Islam. In his latest book, Between Allah and Jesus, Prof. Kreeft uses the figure of 'Isa, a devout Muslim studying at Boston College, to highlight the commonalities Kreeft sees between Islamic and Catholic piety, and point up all that we can learn from truly devout adherents of Islam-set in stark contrast to the post-modern, dissenting Catholicism widely accepted at secularized Catholic colleges.
http://insightscoop.typepad.com/2004/2010/11/kreeft-and-spencer-debate-is-the-only-good-muslim-a-bad-muslim.html